Huge gap with Jack via portrayal since the very first time Oda introduces them. Jack is only inserted in that scene to hype them up and look like a chump in comparison
The 1 bil + commanders are a different breed, and Oda had characters hype them up as such since WCI.
Like Jimbe said that Luffy makes a huge bet trying to fight someone with a bounty over 1 Bil when he pushed KAtakuri off the Sunny.
Luffy made a big deal about surpassing Katakuri for all his worth mentioning his over 1 bil bounty.
Marco hyped King and Queen's strength via their bounty as opponents worth over 1 bil.
It's a clear trend and where Oda draws the line between the strongest YC's and the rest.